intel SSD 330 series 120gb not suitable?

The entire OS freezes for 10-30 seconds, the cursor (the infamous beach ball) still moves but no application responds to input.

I don't know whether the drive is malfunctioning or the problem is with the OS. I see other people having this issue and I'm wondering if anyone has any clues as to where to start investigating. If I am to return the drive, I need some proof that it's malfunctioning